Nikephoros I, (died July 26, 811), was Byzantine Emperor from 802 to 811 AD, when he was killed in the Battle of Pliska. A patrician from Seleucia Sidera, Nikephoros was appointed finance minister (logothetēs tou genikou) by the Empress Irene. With the help of the patricians and eunuchs he contrived to dethrone and exile Irene, and to be chosen as Emperor in her stead on October 31, 802. He crowned his son Staurakios co-emperor in 803.